修改插件代码
plantuml-renderer/public/class-plantuml-renderer-public.php
private function encodep( $text ) { //$data = utf8_encode( $text ); //这行注释 $data=$text; //改成这个,text变量本身是utf8编码了,所以不需要转了 $compressed = gzdeflate( $data, 9 ); return $this->encode64( $compressed ); }